TY - JOUR
T1 - ZAKα-driven ribotoxic stress response activates the human NLRP1 inflammasome
AU - Robinson, Kim S.
AU - Toh, Gee Ann
AU - Rozario, Pritisha
AU - Chua, Rae
AU - Bauernfried, Stefan
AU - Sun, Zijin
AU - Firdaus, Muhammad Jasrie
AU - Bayat, Shima
AU - Nadkarni, Rhea
AU - Poh, Zhi Sheng
AU - Tham, Khek Chian
AU - Harapas, Cassandra R.
AU - Lim, Chrissie K.
AU - Chu, Werncui
AU - Tay, Celest W.S.
AU - Tan, Kiat Yi
AU - Zhao, Tianyun
AU - Bonnard, Carine
AU - Sobota, Radoslaw
AU - Connolly, John E.
AU - Common, John
AU - Masters, Seth L.
AU - Chen, Kaiwen W.
AU - Ho, Lena
AU - Wu, Bin
AU - Hornung, Veit
AU - Zhong, Franklin L.
N1 - Publisher Copyright:
Copyright © 2022 The Authors, some rights reserved
PY - 2022/7/15
Y1 - 2022/7/15
N2 - Human NLRP1 (NACHT, LRR, and PYD domain-containing protein 1) is an innate immune sensor predominantly expressed in the skin and airway epithelium. Here, we report that human NLRP1 senses the ultraviolet B (UVB)- and toxin-induced ribotoxic stress response (RSR). Biochemically, RSR leads to the direct hyperphosphorylation of a human-specific disordered linker region of NLRP1 (NLRP1DR) by MAP3K20/ZAKa kinase and its downstream effector, p38. Mutating a single ZAKa phosphorylation site in NLRP1DR abrogates UVB- and ribotoxin-driven pyroptosis in human keratinocytes. Moreover, fusing NLRP1DR to CARD8, which is insensitive to RSR by itself, creates a minimal inflammasome sensor for UVB and ribotoxins. These results provide insight into UVB sensing by human skin keratinocytes, identify several ribotoxins as NLRP1 agonists, and establish inflammasome-driven pyroptosis as an integral component of the RSR.
AB - Human NLRP1 (NACHT, LRR, and PYD domain-containing protein 1) is an innate immune sensor predominantly expressed in the skin and airway epithelium. Here, we report that human NLRP1 senses the ultraviolet B (UVB)- and toxin-induced ribotoxic stress response (RSR). Biochemically, RSR leads to the direct hyperphosphorylation of a human-specific disordered linker region of NLRP1 (NLRP1DR) by MAP3K20/ZAKa kinase and its downstream effector, p38. Mutating a single ZAKa phosphorylation site in NLRP1DR abrogates UVB- and ribotoxin-driven pyroptosis in human keratinocytes. Moreover, fusing NLRP1DR to CARD8, which is insensitive to RSR by itself, creates a minimal inflammasome sensor for UVB and ribotoxins. These results provide insight into UVB sensing by human skin keratinocytes, identify several ribotoxins as NLRP1 agonists, and establish inflammasome-driven pyroptosis as an integral component of the RSR.
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U2 - 10.1126/science.abl6324
DO - 10.1126/science.abl6324
M3 - Article
C2 - 35857590
AN - SCOPUS:85134690224
SN - 0036-8075
VL - 377
SP - 328
EP - 335
JO - Science
JF - Science
IS - 6603
ER -